Home / 9,120.15-13,679.78-3,574.53

Finding the Fourth Proportional to 9,120.15, 13,679.78 and 3,574.53

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Solution

The fourth proportional to 9,120.15, 13,679.78 and 3,574.53 is: 5,361.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.15 : 13,679.78 = 3,574.53 : x
  2. Step 2: Convert to fraction form
    9,120.15/13,679.78 = 3,574.53/x
  3. Step 3: Cross multiply
    9,120.15x = 13,679.78 × 3,574.53
  4. Step 4: Simplify right side
    9,120.15x = 48,898,766.13
  5. Step 5: Solve for x
    x = 48,898,766.13/9,120.15
  6. Step 6: Final answer
    x = 5,361.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.